Pass-type elevator door



E. w. FE-NN, PASS TYPE ELEVATOR DOOR. APPLICATION FILED SEPT- I3, I921.

Patented Aug-.1, 192 2.

a, a i s, ii

, M *r a tale a EMORY W. FENN, 0J3 CHICAGO, ILLINOIS, ASSIGNOR TO IPEELLE COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

PASS-TYPE ELEVATOR DOOR.

Application filed September 13, 1921.

To all whom may concern:

Be it known that l, EMORY lV. FENN, a citizen of the United States, residing at Ghicago, in the county of (look and State of Illinois, have invented certain new and useful Improvements in Pass-Type Elevator Doors, of which the following is a specification, reference being had therein to the accon'ipanying drawings, which form a part thereof.

My invention relates to pass type elevator doors, and more particularly to the arrangement of the suspension means connecting two oppositely movable, vertically sliding door sections, so as to permit the maximum range of movement of the upper door section.

In pass type elevator doors of the type to which my invention relates, the door sections are mounted in an elevator shaft by means of a guide rail structure which will bring the door sections close to the wall of a shaft about the door opening when they are in the closed position, while positioning them away from the wall as they are being opened so as to permit the upper door section to recede from the wall of the shaft and pass a closed door at the opening immediately above it and the lower section to similarly pass a closed door at the opening immediately below it.

l Vith this type of door the height of the door opening may be very much greater than with the ordinary type of vertically movable, two-section doors, since space be tween the sill of one door opening and the lintel of the door opening below need not be considered in providing for the door structure.

Where the space between door openings in different floors is small, I have found it necessary in providing for the maximum range of movement for the upper door sec tion particularly, to use a particular arrangement of sheaves and of the flexible connections between the door sections, to compensate for the horizontal component of movement of the upper door section and avoid interference between the tworeaches of said flexible connections, which particular arrangement is made the subject matter of my present application.

The detailed construction of the guide rails and of the door structure co-operating Specification of Letters Patent Serial No. 500,286.

therewith is immaterial to the present invention, such being made the subject matter of a separate application for patent.

The invention consists primarily in a pass posite sides thereof, the axes of which are parallel with the wall of a shaft adjacent said opening, and a flexible connection be tween said sections passing over said sheave, the reach of said connection attached to a downwardly movable section passing between, said sheave and the wall of the shaft, and the reach of said connection attached to an upwardly movable section passing about sheave from within the, shaft toward the wall thereof; and in such other novel features of construction and combination of parts as are hereinafter set forthand described, and more particularly pointed out in the claims hereto appended.

Referring to the drawings,

Fig. 1 is a condensed view of a pass type elevator door embodying my invention, from within a shaft;

Fig. .3 is a side view thereof; and

Figs. 3 and 4 are diagrammatic views showing the position of the suspension means with the door in the closed position, and with the door in the open position, respectively.

Like letters refer to like parts throughout the several views.

In the embodiment of my invention. shown in the drawings, l have indicated at a and 7) the upper and lower sections of an elevator door, said sections being vertically movable in opposite directions in opening and closing the door, this movement having a horizontal component so that as a door is opened, both sections will automatically move away from the wall of an elevator shaft adjacent the door opening for a dis- Patented Aug. 1t, 1922, I

tance suflicient to permit said sections to pass closed doors at a door opening above andbelow the door that is being operated.

This movement is under the control of means carried by the door co-operating with guide rail structures on the wall of the shaft at each side of the door opening, which in- .clude short guide sections 0 adjacent the meeting point of the doors, guide sections (Z parallel therewith and ad acent the llntel yof the door opening, and guide sections 6 door section Z2 also parallel with the sections 0, adjacent the slllOf the door opening, said sections (Z and 0 being spaced within, or away fromthe wall of, the shaft adjacent said opening *iora distancegreater than the sections 0.

The sections 0 and (Z of .each guide rail structure are connected by an oblique byan oblique section while the sections 0 and 6 are connected by a similar oblique section g. The various guide rail sectlons above referred to are carried upon each side of the d'oorby' What is known as a wall angle h, which is cut away at h n conformity with the adjacentrail sections so as to -provide clearance forthe hanger bar I of the lower The. upperdoor section is provided with a hanger bar a, the length of which is somewhat shorter than that of the section Z1" so. as to' offset the two reaches of the flexible connection between these door sections with relation to each other, thus avoiding interference of said reaches whenthe 'doorsectlons are n motion or when the door is closed.

Secured to the wall rail h adjacent the ,lintel of a door opening, is a fitting i carry- I mg a sheave jabout WlHChihG flexible con- 40 nection ,between the door sections a-b I'passes, one reach 76 of said connect-ion being [secured to the hanger bar a whlle 'the'other about the sheave j in a direction from with in [the shaft toward the wall 0, the reach 972 of said connection passing between said sheaves andthe wall 0.

The partsz', j, 75, m andn are duplicated upon opposite sides of the door.

the construction described, when the door is in the closed position, the two reaches '7; and m n converge toward each other be- "ing upon substantially the same vertical 1 plane laterally of the door as shown in Fig. 2, but so spaced as to be offset inrelation to each other, as shown in Fig. 1. p

f HAS a door is opened, both reaches of the chain In at their point of connection with their respe'ctive door sections will have a, movenient' inwardly of the shaft, the hanger sheave j.

bar a of the section a when it reaches the fully open position, being adjacent the During the entire movement of the (1001' either in opening or closing, the point of connection of the turnbuckle n and the reach of the chain will occupy correspending vertical planes as to each other,

and a vertical plane parallel to that which they occupy when the door is fully closed. The lateral deflection of these chains due to the length of the respective hanger bars a and Z), and the positions of the sheaves-j upon opposite sides of the door, is never sufficiently great to cause the flexible connection to ride upon the rim of the sheave. The mounting of this sheave upon the wall rail 7L and the dian'.--- 'eter of said sheave is such that when the door is in the fully opened position, the point of connection of the reachk will be closely adjacent the perimeter of said sheave but positioned a short distance between same and the door section a. in fact by employ- 'ing this constructiom merely enough room between floors 1s required to mount the two reaches Z4 and m-n of the flexible connection between the door sections a and 7) cross the same vertical plane, thus permitting the hanger bar a to be brought into theclose proximity to the sheave j above re- 7 ferred to.

While a pass typedoor of the type to which my invention relates can be operated with the reach m attached to the hanger bar a and the reach 76 attached to the turn buckle n, such a construction necessitates the when'opening the door the hanger bar a be brought close to the sheave. V

tlme th1s construct-ion Wlll cause one reach At the same hanger bar 6 is carried by the section 12 adacent the top thereof, a practice common to vertically movable elevator doors, the sec- ,tions of which have movement in opposite directions. a

The invention: herein described resides solely in the arrangement of the sheaves and the flexible suspension means with relation thereto, other characteristics shown in the drawings being capable of wide variation without departing from the spirit and scope of theinvention.

provision of greater clearance between floors Having described the invention, what I claim as new and desire to have protected by Letters Patent, is

1. A pass type elevator door embodying therein in combination with a door consisting of a plurality of oppositely, vertically movable sections, and a guide rail structure therefor consisting of a short guide section adjacent the meeting point of the door sections, guide sections parallel therewith, spaced within the shaft towards the lintel, and the sill, of a door opening respectively, and oblique guide sections connecting said short and said other guide sections, of sheaves adjacent the lintel of the door opening upon opposite sides thereof, the axes of which are parallel with the wall of a shaft adjacent said opening, and flexible connections between said sections passing over said sheaves respectively, the reach of each connect-ion attached to a downwardly movable section passing between the respective sheave and the wall oi the shaft, and the reach of said connection attached to an upwardly movable section passing about said sheave from within the shaft toward the wall thereof.

2. A pass type elevator door embodying therein in combination with a door consisting of an upper section, a laterally pro jecting hanger bar adjacent the bottom thereof, a lower section, a hanger bar adj acent the top thereof of relatively greater length than the hanger bar of said upper section, said sections being vertically and oppositely movable with relation to each other, a guide rail structure therefor consisting of ashort guide section adjacent the meeting point of the door sections, guide sections parallel therewith and spaced within the shaft towards the lintel, and the sill, of a door opening respectively, and oblique guide sections connecting said short and said other guide sections, a wall angle carrying said guide sections respectively, said wall angle being cut away in conformity with said guide rail sections, of sheaves carried by said wall angles adjacent the lintel of the door opening upon opposite sides thereof, the axes of said sheaves being parallel with the wall ofsa shaft adjacent said opening, and flexible connections between said sections passing over said sheaves respectively, one reach of said each connection being connected to the hanger bar of said lower door section and passing between the respective sheave and the wall of the shaft, and the other reach of said connection being attached to the hanger bar of said upper door section and passing therefrom about said sheave toward the wall of the shaft, whereby the ends of said reaches will be oii'set laterally with relation toeach other, and no part of said flexible connection, with the opening or closing of the door, will pass the plane of movement of another part of said connection.

In witness whereof I have hereunto affixed my signature, in the presence of two subscribing witnesses, this 30th day of August 1921.

EMORY W. FENN.

\Vitnesses ROBERT S. PEELLE, Louis Hoos. 

